Home / 20,721.48-31,081.33-6,682.29

Finding the Fourth Proportional to 20,721.48, 31,081.33 and 6,682.29

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Solution

The fourth proportional to 20,721.48, 31,081.33 and 6,682.29 is: 10,023.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,721.48 : 31,081.33 = 6,682.29 : x
  2. Step 2: Convert to fraction form
    20,721.48/31,081.33 = 6,682.29/x
  3. Step 3: Cross multiply
    20,721.48x = 31,081.33 × 6,682.29
  4. Step 4: Simplify right side
    20,721.48x = 207,694,460.65
  5. Step 5: Solve for x
    x = 207,694,460.65/20,721.48
  6. Step 6: Final answer
    x = 10,023.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.